Home / 231,568.43-319,557.57-128,207.23

Finding the Fourth Proportional to 231,568.43, 319,557.57 and 128,207.23

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Solution

The fourth proportional to 231,568.43, 319,557.57 and 128,207.23 is: 176,922.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,568.43 : 319,557.57 = 128,207.23 : x
  2. Step 2: Convert to fraction form
    231,568.43/319,557.57 = 128,207.23/x
  3. Step 3: Cross multiply
    231,568.43x = 319,557.57 × 128,207.23
  4. Step 4: Simplify right side
    231,568.43x = 40,969,592,563.61
  5. Step 5: Solve for x
    x = 40,969,592,563.61/231,568.43
  6. Step 6: Final answer
    x = 176,922.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.